SECONDARY BATTERY - SANYO ELECTRIC CO

Title:

SECONDARY BATTERY

Document Type and Number:

WIPO Patent Application WO/2021/192664

Kind Code:

A1

Abstract:

In the present invention, for each winding circumference of a positive electrode plate of an electrode body, two positive electrode tabs are projectingly formed at an end edge of the positive electrode plate on one side in the winding axis direction. For each winding circumference of a negative electrode plate of the electrode body, two negative electrode tabs are projectingly formed at an end edge of the negative electrode plate on the other side in the winding axis direction. The positive electrode tabs projectingly formed on the positive electrode plate include a plurality of types of positive electrode tabs having mutually different projection lengths and base end widths, and the negative electrode tabs projectingly formed on the negative electrode plate include a plurality of types of negative electrode tabs having mutually different projection lengths and base end widths.

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Inventors:

HOSOKAWA TAKASHI
YAMADA TOMOYUKI

Application Number:

PCT/JP2021/004624

Publication Date:

September 30, 2021

Filing Date:

February 08, 2021

Export Citation:

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Assignee:

SANYO ELECTRIC CO (JP)

International Classes:

H01M10/04; H01M50/10; H01M50/147; H01M50/531; H01M50/543

Domestic Patent References:

WO2013001821A1

2013-01-03

Foreign References:

JP2014060045A	2014-04-03
JP2019212434A	2019-12-12
JP2019061779A	2019-04-18
JP2015141847A	2015-08-03
JP2017050069A	2017-03-09
JP2021028896A	2021-02-25
JP2016139596A	2016-08-04

Other References: